EP 0338488 B1 19940713 - Multilayer structure and easily openable container and lid.
Title (en)
Multilayer structure and easily openable container and lid.
Title (de)
Mehrschichtige Struktur und leicht zu öffnender Behälter und Deckel.
Title (fr)
Structure multicouche, récipient et couvercle faciles à ouvrir.
Publication
Application
Priority
JP 9538688 A 19880420
Abstract (en)
[origin: EP0338488A2] A multilayer structure comprising (C) a substrate layer, (A) a surface layer of a thermoplastic resin, and (B) an intermediate layer of a thermoplastic resin sandwiched between the (C) substrate layer and the (A) surface layer, wherein the (B) intermediate layer contains 0 to 70 % by weight of a flake inorganic filler, the peeling strength between the (A) surface layer and the (B) intermediate layer is from 0.3 to 2.0 kg/15mm, and the peeling strength between the (B) intermediate layer and the (C) substrate layer is at least 1.2 times as large as the peeling strength between the (A) surface layer and the (B) intermediate layer. When a packaging container is produced by forming the multilayer structure into a container body and sealing the container body with a lid, easy openability and high sealing property will be ensured because the opening of the packaging container is not operated by using the delamination between the sealed portion but by using the easy delamination between the surface layer (A) and the intermediate layer (B). The use of the multilayer structure for production of packages is economically advantageous because the recovered scrap can be reused as the material for the substrate layer (C) without affecting the peelability of the surface layer (A).
IPC 1-7
IPC 8 full level
B32B 7/04 (2006.01); B65D 77/20 (2006.01)
CPC (source: EP KR US)
B32B 1/00 (2013.01 - KR US); B32B 3/04 (2013.01 - KR US); B32B 7/04 (2013.01 - EP KR US); B32B 27/08 (2013.01 - KR US); B32B 27/20 (2013.01 - KR US); B65D 77/2032 (2013.01 - EP KR US); B32B 2439/00 (2013.01 - KR US); B65D 2577/2033 (2013.01 - EP KR US); B65D 2577/205 (2013.01 - EP KR US); B65D 2577/2066 (2013.01 - EP KR US); B65D 2577/2083 (2013.01 - EP KR US); Y10T 428/25 (2015.01 - EP US); Y10T 428/2982 (2015.01 - EP US); Y10T 428/31913 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0338488 A2 19891025; EP 0338488 A3 19900926; EP 0338488 B1 19940713; AT E108400 T1 19940715; AU 3259289 A 19891026; AU 605034 B2 19910103; BR 8901812 A 19891128; CA 1316469 C 19930420; DE 68916681 D1 19940818; DE 68916681 T2 19950223; KR 900015909 A 19901110; KR 910008837 B1 19911021; MX 174044 B 19940418; NZ 228605 A 19901026; US 4970113 A 19901113
DOCDB simple family (application)
EP 89106883 A 19890418; AT 89106883 T 19890418; AU 3259289 A 19890407; BR 8901812 A 19890418; CA 595497 A 19890403; DE 68916681 T 19890418; KR 890005221 A 19890420; MX 1573089 A 19890419; NZ 22860589 A 19890404; US 33948989 A 19890417